Security readout for executives and security teams
Plain-English summary
An attacker who can reach a vulnerable SonicWall Global Management System over the network may read internal files without signing in. Those files could contain sensitive information. Organizations using GMS 9.5.2 or earlier should promptly assess access and seek vendor remediation guidance. The supplied information rates this critical but does not establish active exploitation.
Executive priority
Treat reachable affected deployments as an urgent security priority. Assign an owner to confirm exposure and obtain vendor remediation guidance. Sensitive information disclosure is described; the critical score also includes availability impact that the narrative does not explain. Actual business impact depends on network access and the information exposed.
Technical view
CVE-2026-109593 affects SonicWall GMS 9.5.2 and earlier. The description identifies unauthenticated internal file disclosure. CVSS 3.1 is 9.1, with network access, low complexity, no privileges, and no user interaction required. The vector specifies high confidentiality and availability impacts, with no integrity impact. CWE-636 is listed, but the underlying failure mechanism is not explained.
Likely exposure
Potential exposure includes deployments of SonicWall GMS 9.5.2 or earlier reachable by an attacker. Internet exposure is not required; access from an internal or connected network could satisfy the stated prerequisite. The bundle does not identify affected endpoints, configuration dependencies, or the contents of accessible files.
Exploitation context
The supplied bundle marks KEV as false and provides no evidence of active exploitation or public exploit availability. This does not establish that exploitation has not occurred. The stated access requirements make reachable affected deployments a priority for assessment.
Researcher notes
Analysis is limited to the supplied bundle; linked advisory contents were not provided or independently reviewed. The availability impact in the CVSS vector needs reconciliation with the file-disclosure description. CWE-636 alone does not establish the precise root cause. Fixed versions, workarounds, affected endpoints, and exploitation evidence remain unspecified.
Mitigation direction
- Check SonicWall advisory SNWLID-2026-0019 for confirmed fixed versions, patches, and vendor-approved workarounds; none are specified in the bundle.
- As a precaution, restrict GMS network access to authorized management systems while assessing vendor guidance.
- Prioritize remediation planning for affected deployments reachable from untrusted networks.
Validation and detection
- Inventory GMS deployments and verify whether installed versions are 9.5.2 or earlier.
- Review firewall rules and network paths to determine who can reach affected GMS deployments.
- Confirm remediation requirements against SonicWall guidance before treating any version or configuration change as a fix.
- After remediation, verify installed versions and intended network restrictions.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-636: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-109593 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H3.95.2CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0019CVE reference, sonicwall · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE mapping pending import
This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.